Concept:Warm booting means restarting a computer while the power remains switched on.Explanation:In MS-Windows, pressing Ctrl + Alt + Del interrupts the current system session.This key combination leads to the Windows security screen or task manager.From there, the user can choose to restart the computer.It resets the operating system without cutting off the power supply.Thus, this shortcut is used to initiate a warm boot.Answer:B. Ctrl + Alt + Del